A001499 as tables, graphs or sounds

A001499 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`6`
`4`		`90`
`5`		`2040`
`6`		`67950`
`7`		`3110940`
`8`		`187530840`
`9`		`14398171200`
`10`		`1371785398200`
`11`		`158815387962000`
`12`		`21959547410077200`
`13`		`3574340599104475200`
`14`		`676508133623135814000`
`15`		`147320988741542099484000`
`16`		`36574751938491748341360000`
`17`		`10268902998771351157327104000`

[1,0,1,6,90,2040,67950,3110940,187530840, 14398171200,1371785398200,158815387962000, 21959547410077200,3574340599104475200, 676508133623135814000,147320988741542099484000, 36574751938491748341360000, 10268902998771351157327104000]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research